Ozonizer



A. E. EVANS OZONI ZER Filed Jan. 30, 1928 I raven-tor- MM; Attorxqegs Patented ay 3, 1932 ALBERT E. EVANS, F CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE COBOZONE COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- WARE OZONIZEB Application filed January 80, 1928. Serial No. 2503M.

This invention relates to ozonizers and has for its object the provision of a sim le, inexpensive, quiet' and practical electric device whereby ozone can be produced cheaply and reliably for purifying, disinfecting and deodorizing purposes in the toilet and sanitary rooms of hotels, oilice buildings, railway stations, steamships, public halls, theatres, and other places.

In the drawings accompanyin and forming a part of this application I ave shown one physical structure in which my invention is embodied, although it will be understood that these drawings are intended to be illustrative of principles rather thanexhaustive of the appliances by which the same can be utilized.

Fig. 1 is a vertical sectional view through a specimen ozonizer in place on a wall, corresponding to the line 1-1- in Fig. 2; Fig. 2 is a horizontal sectional view on the line 22 of Fig. 1; Fig. 3 is a perspective view of the apparatus showing the parts separated: and Fig. 4 is a diagram of the magnetic and electric connections.

In its preferredform the casing of my improved ozonizer consists of a rectangular sheet metal box having a back 1. adapted to be secured in vertical position to a wall, a front 2 spaced therefrom, and vertical sides 3-3, here shown as outwardly-displaced at 4-4 to define inwardly-opening recesses for a pur-- pose hereinafter explained. The inner faces of the walls 1 and 2 are here shown as covered by insulating layers 5 of any suitable material such as waxed paper.

Located inside this casing with its edges I tightly received in the recesses 4-4 is the rectentimes the number of turns as the primary 9 so as to increase the voltage from 110 volts to upwards of ten thousand volts. In addition to the cross members 7 and 8 of the transformer frame I have also shown a third, narrower cross member 12 for the purpose of se curing a small amount of magnetic leakage at all times, regardless of the demagnetizing effect of the winding 10, and thereby inducing a more powerful magnetism in the core frame.

The coils 9 and 10 are both spaced from the rear wall 1 of the casing and between said coils and said rear wall I interpose a narrow, flat-sided, elongated tube 13 of suitable insulating material such as mica wound in layers and suitably cemented together. The upper and lower ends of this tube or flue are left open to enable the circulation of 'air and have free communication with suitable inlet apertures 14 in the bottom plate 15, and with a suitable screen-cloth-covered outlet openmg 16 in the top plate 17 with which said casing is provided. Inside said tube I locate a rough surfaced sheet 18 of metal, so located relatively to the wall of the tube as to define therewith a passage-way for air. One terminal 19 of the secondary winding is connected to said sheet of metal, the wall of the tube being preferably slotted as shown at 20 to enable the ready introduction and removal of the electrode. The other terminal 21 of the secondary winding is suitably groun-ded'to the plate 1 of the casing, or other member electrically connected therewith. In the present embodiment this is eifected'by welding the terminal 21 to the frame.

The electrode 18 is preferably made of some oxidation-resisting metal such as aluminum and to secure the roughness desirable I have found nothing better than a piece of woven-wire-screen-cloth of this matcrial. Other metals like brass, copper, iron, etc. can be employed, but these ordinarily become wasted away by the operation of the device, and frequently produce an acrid and unpleasant odor, from which aluminum and certain other of the oxidationresistihg metals are free.

Alternating current at 110 volts is supplied to the primary coil by way of the terminal wires 22. The essential electric and magnetic connections are illustrated in Figure 4. The screen cloth member 18 constitutes one electrode and the casing and its internal metal parts constitute the other electrode. Upon energizing the transformer the surface of the electrode 18 becomes bathed with a dim, purplish-colored light which is apparently of the nature of the so-ca1led,corona discharge since it is quiet and noiseless. Thermal circulation of the air through the tube '13 past this electrode causes the same to become sufficiently ozonized for the disinfecting and deodorizing purposes hereinbefore mentioned. The cost of the apparatus is very small, its consumption of current is only nominal, the sanitary, therapeutic, germicidal, and deodorizing efiect "of ozone is much superior-to that of the oils and other chemical preparations customarily employed for these purposes, and the device requires no refilling, renewal, or attention.

It will be understood, however, that while I have described in detail the particular physical embodiment of my invention herein chosen for purposes of illustration, I do not limit myself to those details or to that physical embodimentin any wise except as specifically recited in my several claims which I desire may be constructed each independently of limitations contained in other claims.

Having thus described my invention what I claim is:

1. An ozone machine comprising: a casing; a transformer located in said casing with one side thereof slightly spaced from the corresponding wall of said casing; a flat tube of insulating material interposed between said side and said wall and open at its ends to permit'the passage of a current of air therethrough; an electrode disposed in saidtube; and connections connecting said electrode to a secondary terminal of said transformer.

2. An ozone machine comprising: a casing, having longitudinal grooves on the interior of two opposite walls; a transformer located in said casing with the two edges of its core tightly received within said grooves and with one side thereof slightly spaced from another wall of said casing; a flat tube of insulating material interposed between said side and said other wall and open at its ends to permit the passage of a current of air therethrough; an electrode disposed in said tube; and connections connecting said electrode to a secondary terminal of said transformer.

3. An ozone machine comprising: a casing, acting as an electrode; a transformer located in said casing; an electrode disposed within said casing; insulating material interposed between said electrode and said casing; and connections connecting said casing and said electrode to the secondary terminals of said transformer.

4. An ozone machine comprising: a casing, acting as an electrode; a transformer located in said casing, and having its core tightly in electrical contact with said casing; an electrode disposed within said casing; insulat- 5. An ozone machine comprising: a casing,

having longitudinal grooves on the interior of two opposite walls, and acting as an electrode; a transformer located in said casing and having the two edges of its core tightly received within said grooves in tight electrical contact with said casing; an electrode disposed within said casing; insulating material interposed between said casing and said core on the one hand and said electrode on the other hand; and connections connecting said core and said electrode to the secondary terminals of said transformer.

6. An ozone machine comprising: a casing, 2 ting as an electrode; a transformer located in said casing with one side thereof slightly spaced from the corresponding wall of said casing; a fiat'tube of insulating material interpo'sed between said side and said wall and open at its ends to permit the passage of a current of air therethrough; an electrode disposed in said tube; and connections connecting said casing and said electrode to the secondary terminals of said transformer.

V 7. An ozone machine comprising: a casing, acting as an electrode; a transformer located in said casing with one side thereof slightly spaced from the corresponding wall of said casing, and with its core tightly in electrical contact with said casing; a flat tube of insulating material interposed between said side and said wall and open at its ends to permit the passage of a current of air therethrough; an electrode disposed in said tube; and connections connecting said core and said electrode to the secondary terminals of said transformer.

' 8. An ozone machine comprising: a casing,

acting as an electrode; a transformer locatedv in said casing with its core tightly in electri: cal contact with two opposite walls of said casing and with one side thereof slightly spaced from another wall of said casing; a flat tube of insulating material interposed between said side and said other wall and open at its ends to permit the passage ofa current of air therethrough; an electrode disposed in said tube; and connections connecting said core and said electrode to the secondary terminals of said transformer.

9. An ozone machine comprising: a casing, having longitudinal grooves on the interior of two opposite walls, and acting as an electrode; a transformer located in said casing, having the two edges of its core tightly received within said grooves in tight electrical contact with said casing, and having one sidethereof slightly spaced from another wall of said casing; a fiat tube of insulating material interposed between said side and said other meat wall and open at its ends to permit-the assage of a current of air therethrough; an e eetrode disposed in said tube; and connections connecting said core and said electrode to the secondaryterminals of said transformer.

. 10. An ozone machine comprising: a transformer, a flat tube of insulating material, and a flat electrode, all interconnectable to provide a compact assembly of ozonizer parts; a casing, having opposed interior grooves, and a side wall spaced a predetermined distance from said grooves; said ozonizer assembly being insertable into said casing as a casing, having opposed interior grooves, and

. casing, a trans Q j signature... 7

a side wall spaced a predetermined distance from said grooves; said ozonizer assembly being insertable into said casing as a unit the transformer disposed and held by sai grooves, and the remaining portions of said assemblybeing interposed in the space between said transformer and said side wall, and cooperating with said side wall to provide mechanism operable to generate ozone.

12. An ozone fgenerator comprising a metal ing, a relatively flat insulating tube between the transformer and one wall of the casing, a substantially flat elongated electrode in said tube lying alongside said wall of the casing, the transformer having its terminals con nected one to said casing and one to said electrode. v

13. In an ozone generator, a casing, oppo site side walls thereof having outwardl extending grooves, a transformer, a core t erefor having side members pro'ecting laterall beyond the coils of the trans ormer and sli abl niounted in said grooves, an electrode, a dielectric element associated with said electrode and movable with said transformer into and out of said casin throughmne end thereof, and closures fort e ends of said casing.

Intestimonywhereof I hereunto afiix my ALBERT E. EVANS.

ormer supported in the'cas- 

